Abrasive sharpener



FIG. 1 is a front perspective view of the ornamental design for abrasive sharpener of the invention;

FIG. 2 is a left elevational end view, viewing FIG. 1, of the ornamental design for abrasive sharpener of FIG. 1;

FIG. 3 is a front elevational view of the ornamental design for two abrasive sharpener of FIG. 1;

FIG. 4 is a back elevational view of the ornamental design for abrasive sharpener of FIG. 1;

FIG. 5 is a right end elevational view, viewing FIG. 1, of the ornamental design for abrasive sharpener of FIG. 1.

FIG. 6 is a top plan view of the ornamental design for abrasive sharpener of FIG. 1; and,

FIG. 7 is a bottom plan view of the ornamental design for abrasive sharpener of FIG. 1.

The broken lines define unclaimed portions of the design. 

The ornamental design for the abrasive sharpener, as shown and described. 